analyzing-cobalt-strike-malleable-profiles

analyzing-cobalt-strike-malleable-profiles is a skill for Claude Code from killvxk/cybersecurity-skills-zh. It costs 94 tokens per session (539 once invoked), scanned A, original, Apache-2.0.

A security-analysis tool for reading Cobalt Strike configuration files and identifying how its command-and-control traffic is shaped. Cobalt Strike is a penetration-testing platform that can also be misused by attackers.

In plain words
What is it for?
Use it to extract request paths, headers, user-agent strings, timing settings, and other indicators, then compare them with network logs or JARM TLS fingerprints. JARM is a method for identifying servers by how they respond to TLS connections.
Why use it?
It turns hard-to-read configuration details into clues for spotting suspected Cobalt Strike infrastructure and network traffic.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the cybersecurity-skills-zh plugin — 58 skills shipped together

Good fit Use it to extract request paths, headers, user-agent strings, timing settings, and other indicators, then compare them with network logs or JARM TLS fingerprints. JARM is a method for identifying servers by how they respond to TLS connections.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/killvxk/cybersecurity-skills-zh/analyzing-cobalt-strike-malleable-profiles
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add killvxk/cybersecurity-skills-zh --skill analyzing-cobalt-strike-malleable-profiles
Clone the repo
git clone --depth 1 https://github.com/killvxk/cybersecurity-skills-zh

Made for: Claude Code.

Or install cybersecurity-skills-zh, the plugin that ships this one along with the rest of its 58 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for analyzing-cobalt-strike-malleable-profiles

README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/killvxk/cybersecurity-skills-zh/analyzing-cobalt-strike-malleable-profiles"><img src="https://agentmods.dev/badge/skills/killvxk/cybersecurity-skills-zh/analyzing-cobalt-strike-malleable-profiles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 539 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00094 $0.00539
Opus 5 $0.00047 $0.00269
Sonnet 5 $0.00019 $0.00108
Haiku 4.5 $0.00009 $0.00054

Measured 12d ago against content hash 23d5d5eb75ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

analyzing-cobalt-strike-malleable-profiles scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

result = subprocess.run(
skills/analyzing-cobalt-strike-malleable-profiles/SKILL.md · 57 lines

What it actually says

分析 Cobalt Strike 可延展配置文件

使用说明

使用 pyMalleableC2 库解析可延展 C2 配置文件,提取失陷指标(IOC)和检测机会。结合 JARM 指纹识别来识别 C2 服务器。

from malleablec2 import Profile

# 从文件解析可延展配置文件
profile = Profile.from_file("amazon.profile")

# 提取全局选项(休眠时间、抖动、User-Agent)
print(profile.ast.pretty())

# 获取 HTTP-GET 块的 URI 和 Headers,用于构建网络签名
# 获取 HTTP-POST 块中的数据外泄模式
# 对已知 C2 基础设施生成 JARM 指纹

关键分析步骤:

  1. 解析可延展配置文件,提取 HTTP-GET/POST URI 模式
  2. 提取 User-Agent 字符串和自定义 Headers,用于 IDS 签名
  3. 识别休眠时间和抖动,用于设置 Beacon 检测阈值
  4. 使用 JARM 扫描可疑 IP,与已知 C2 指纹哈希进行匹配
  5. 将提取的 IOC 与网络流量日志进行交叉参考

示例

# 解析配置文件并提取检测指标
from malleablec2 import Profile
p = Profile.from_file("cobaltstrike.profile")
print(p)  # 重建的源码

# 对可疑 C2 服务器进行 JARM 扫描
import subprocess
result = subprocess.run(
    ["python3", "jarm.py", "suspect-server.com"],
    capture_output=True, text=True
)
print(result.stdout)
# 将指纹与已知 CS JARM 哈希进行比对
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 57 lines · 94 tokens per session scan A 23d5d5eb75ea

Subscribe to this mod's changes

analyzing-cobalt-strike-malleable-profiles is a skill published in the GitHub repository killvxk/cybersecurity-skills-zh (45 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 94 tokens to every session and 539 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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